francis collins. one of them is -- we have some footage here of you at a graduation at the university of michigan, back in 2007. were you giving a graduation address? >> i was. >> let's look back. [video clip] >> this is a song that probably after today, you will never again want to hear it. this is a rush, playing my guitar at chrysler arena. [laughter] whoa. someone, lock the doors.i do not want this to slip away. this is a song of the student experience, except for the last sentence, which is for me as a genetics professor. so here we go.♪ ♪ ♪ i came i bought the books lived in the dorms followed directions i worked, studied hard, made lots of friends who had i crammed s they gave me grades and may i say, not in a fair way but more, much more than this, i did it their way ♪ [applause] >> now why did you do that? >> oh, goodness. i grew up in a musical family, and music has always been for me a break from the seriousness of life, whether it is a joyful song or a silly song.even a sad song. i